Abstract. In keeping with the recent development of mobile-related industries, users require higher quality media service based on high-performance terminal devices and intellectual networks. In addition, P2P technology, which reduces the burden on a server and distributes roles unlike the existing client/server model, is attracting attention in mobile areas as well. This paper looks into the network mechanism where a new node is added into the mobile streaming system, and suggests an efficient join technique for mobile nodes of limited resources and battery capacity. This method takes into account the wait time of peers, and suggests a technique for peer-to-peer selection, in which the parent node's choice of a join node is based on remaining download time. As a result, an improved system can be constructed which reduces the rate of churning and provides more robust and resilient topology.